public class sugar {
    public static void main(String[] args) {
        Integer i1= 100;
        Integer i2 =100;
        if(i1 == i2){
            System.out.println("i1== i2");
        }
        else{
            System.out.println("i1!=i2");
        }
        Integer a2= 200;
        Integer a1= 200;
        if(a1==a2){
            System.out.println("a2==a1");
        }
        else{
            System.out.println("a2!=a1");
        }
        if(a1.equals(a2)){
            System.out.println("a1.equal a2");
        }
        else {
            System.out.println("a1 not equal a2");
        }
    }
}
